tolong kerjakan nomor 23-26

no. 23
panjang BC = 2 AB = 2 × 27 = 54
K = (27*2) + (54*2)
K = 54 + 108 = 162 (B)
no. 24
luas bangun trapesium =1/2 (a+b)t = 1/2 (13+19)18 = 9 (32) = 288 (c)
no. 25
Luas bangun yang diarsir = 4/6 × phi × r²
= 4/6 × 22/7 × 21 × 21 = 924 (A)
no. 26
luas gabungan = persegi panjang + segitiga
L = (p×l) + (1/2 × a × t)
L = (35×26) + (1/2 × 52 × 13)
L = 910 + 338 = 1248 dm² (A)

semoga membantu ^^